`moss.export`¶

Module Contents¶

Classes¶

`StringIteratorIO`
`_CopyWriter`
`DBRecorder`	DBRecorder is for web visualization and writes to Postgres Database

Data¶

__all__

API¶

moss.export.__all__¶: [‘DBRecorder’]

class moss.export.StringIteratorIO(iter: Iterator[str])¶

Bases: io.TextIOBase

readable() → bool¶

_read1(n: Optional[int] = None) → str¶

read(n: Optional[int] = None) → str¶

class moss.export._CopyWriter(dsn: str, proj_str: str, carid2model: Dict[int, str], pedid2model: Dict[int, str])¶

Initialization

async awrite(table_name: str, step, persons, tls, roads)¶

class moss.export.DBRecorder(eng: moss.engine.Engine, db_url: str, mongo_map: str, output_name: str, total_steps: int = 86400, use_tqdm: bool = False, max_unwaited: int = 16)¶

DBRecorder is for web visualization and writes to Postgres Database

The table schema is as follows:

meta_simple: The metadata of the simulation.
- name: The name of the simulation.
- start: The start step of the simulation.
- steps: The total steps of the simulation.
- time: The time of the simulation.
- total_agents: The total agents of the simulation.
- map: The map of the simulation.
- min_lng: The minimum longitude of the simulation.
- min_lat: The minimum latitude of the simulation.
- max_lng: The maximum longitude of the simulation.
- max_lat: The maximum latitude of the simulation.
- road_status_v_min: The minimum speed of the road status.
- road_status_interval: The interval of the road status.
- version: The version of the simulation result schema (now is 2).
{output_name}_s_cars: The vehicles of the simulation.
- step: The step of the simulation.
- id: The id of the vehicle.
- parent_id: The parent id of the vehicle.
- direction: The direction of the vehicle.
- lng: The longitude of the vehicle.
- lat: The latitude of the vehicle.
- model: The model of the vehicle.
- z: The z of the vehicle.
- pitch: The pitch of the vehicle.
- v: The speed of the vehicle.
{output_name}_s_people: The people of the simulation.
- step: The step of the simulation.
- id: The id of the people.
- parent_id: The parent id of the people.
- direction: The direction of the people.
- lng: The longitude of the people.
- lat: The latitude of the people.
- z: The z of the people.
- v: The speed of the people.
- model: The model of the people.
{output_name}_s_traffic_light: The traffic lights of the simulation.
- step: The step of the simulation.
- id: The id of the traffic light.
- state: The state of the traffic light.
- lng: The longitude of the traffic light.
- lat: The latitude of the traffic light.
{output_name}_s_road: The road status of the simulation.
- step: The step of the simulation.
- id: The id of the road.
- level: The level of the road.
- v: The speed of the road.
- in_vehicle_cnt: The in vehicle count of the road.
- out_vehicle_cnt: The out vehicle count of the road.
- cnt: The count of the road.
{output_name}_s_aoi: The number of people in AOI (no content, only for compatibility)
- step: The step of the simulation.
- id: The id of the AOI.
- cnt: The count of the people in the AOI.

The index of the table is as follows:

{output_name}_s_cars: (step, lng, lat)
{output_name}_s_people: (step, lng, lat)
{output_name}_s_traffic_light: (step, lng, lat)
{output_name}_s_road: (step)
{output_name}_s_aoi: (step)